The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 1979
Filed:
Dec. 12, 1977
Hisayoshi Nakatsuka, Mitaka, JP;
Namiki Precision Jewel Co., Ltd., Tokyo, JP;
Abstract
A tone arm adapted to be disposed between a head shell and a holder for the tone arm, the tone arm comprising at least one hollow member contacting the head shell or the tone arm support and having an orientation axis extending through the hollow portion of the hollow member where the angle .theta. between the orientation axis and an arm shaft axis extending between the head shell and the tone arm holder is greater than 0.degree. whereby a mechanical vibration introduced into the tone arm from a vibration source comprising either the head shell or the tone arm holder is divided between two paths both of which start at the contact point between the hollow member and the vibration source and then pass around the respective sides of the hollow member to a cancellation point where the vibrations in the two paths substantially cancel one another due to difference in their direction of travel.